Statistical properties of charmonium spectrum and a new mechanism of J / psi suppression - INSPIRE

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Statistical properties of charmonium spectrum and a new mechanism of J / psi suppression

Jun, 1999

13 pages

Published in:

Phys.Rev.C 60 (1999) 035211

e-Print:

nucl-th/9906069 [nucl-th]

DOI:

10.1103/PhysRevC.60.035211

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Abstract:

The statistical properties of Charmonium energy spectrum determined by the Bethe-Salpeter equation are investigated. It is found that the regular motion of the

c\bar{c}

system can be expected at a small value of color screening mass but the chaotic motion at a large one. It is shown that the level mixing due to color screening serves as a new mechanism resulting in the J/

\psi

suppression. Moreover, this kind of suppression can occur before the color screening mass reaches its critical value for J/

\psi

dissociation. It implies that a strong J/

\psi

suppression is possible in the absence of dissociation of J/

\psi

.

quarkonium: hadron spectroscopy
charmonium
Bethe-Salpeter equation
energy spectrum: statistical analysis
color: screening
scattering: heavy ion
J/psi(3100): yield
numerical calculations

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